What do neurotransmitters do? A. Cause the pre-synaptic neuron to open voltage-gated gates. B. Diffuse across the synaptic cleft and bind to specific receptor sites on the post-synaptic cell. C. Cause calcium to diffuse across the synaptic cleft and bind to specific receptor sites on the post-synaptic cell. D. Diffuse synaptic vesicles which releases molecules into the synaptic cleft.

D. Diffuse synaptic vesicles which releases molecules into the synaptic cleft.

Explanation:

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the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

it is a learned trait

explanation: